Around the world, the illegal wildlife trade is having a devastating effect on many species of animal. Targeting profits made by those involved could help protect them.

Animals - both dead and alive - are being bought and sold on an industrial scale as food, pets, medicines and even ornaments.

The trade affects a huge range of species from great apes to helmeted hornbills, but arguably none more so than the pangolin.

These unusual-looking creatures are prized in some countries for their meat and scales and are thought to be the world's most trafficked mammal, with about 100,000 a year snatched from the wild and sent to Vietnam and China.

Global attention is often focused on species such as elephants and rhinos - and in many countries the populations of these animals has plummeted. In Tanzania, for example, elephant numbers fell by 60% from 109,000 in 2009, to just over 43,000 in 2014, according to government figures.

The hidden driver behind this trade is a basic one: the pursuit of profit.